Effect of calcium ion concentration on the ORR performance of Pd/C catalysts.

Noble metal electrocatalysts prepared by microbial methods have attracted extensive attention because of their environmental protection and easy preparation. However, the preparation of electrocatalysts by microbial methods has problems such as large nanoparticles size and low loading rate. In this study, the porous gel co-embedded with and alginate is prepared as the adsorption matrix to further enhance its mass transfer and adsorption efficiency.